XH_Digital_Management/common/views.py

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import json
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import os
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import urllib.parse
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from django.apps import apps
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from django.core.exceptions import ValidationError
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from openpyxl import load_workbook
from django.conf import settings
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from django.contrib.auth.decorators import login_required
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from django.contrib.staticfiles import finders
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from django.core.files.storage import default_storage
from django.http import FileResponse, HttpResponseNotFound, JsonResponse
from django.views.decorators.csrf import csrf_exempt
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from rest_framework.decorators import api_view
from application.perf_mgnt.serializers import GroupBusinessTargetSerializer
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@login_required
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def download_excel_template(request, template_name):
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"""
该视图提供下载指定的Excel模板文件
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参数:
request: HttpRequest对象
template_name: 请求下载的Excel模板文件的名称期望是一个字符串
返回:
FileResponse对象允许用户下载指定的Excel模板文件
如果文件未找到则返回一个HttpResponseNotFound响应
"""
# 使用finders.find()根据文件名在Django的静态文件目录中查找文件的绝对路径
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file_path = finders.find(f'excels/{template_name}')
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# 如果文件路径不存在返回404响应
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if not file_path:
return HttpResponseNotFound('<h1>文件未找到</h1>')
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# 创建FileResponse对象设置为以附件形式下载设置MIME类型为Excel文件
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response = FileResponse(open(file_path, 'rb'), content_type='application/vnd.openxmlformats-officedocument.spreadsheetml.sheet')
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# 设置Content-Disposition头告诉浏览器这是一个需要下载的文件
# 使用urllib.parse.quote对文件名进行URL编码以确保文件名中包含的特殊字符不会引起问题
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response['Content-Disposition'] = f'attachment; filename="{urllib.parse.quote(template_name)}"'
return response
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@login_required
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def common_excel_parse(request):
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"""
该函数用于解析上传的Excel文件并返回数据
Args:
request: HTTP请求对象包含上传的Excel文件
Returns:
JsonResponse: 包含解析后的Excel数据的JSON响应或包含错误消息的JSON响应
Raises:
N/A
"""
# 如果是POST请求并且有上传的文件
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if request.method == 'POST' and request.FILES:
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# 获取上传的Excel文件
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excel_file = request.FILES.get('excel_file')
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# 如果没有提供文件,返回错误响应
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if not excel_file:
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return JsonResponse({'error': '没有提供文件。'}, status=400)
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# 获取fields_map和model_config
fields_map = json.loads(request.POST.get('fields_map', '{}'))
model_config = json.loads(request.POST.get('model_config', '{}'))
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# 动态获取模型
try:
model = apps.get_model(model_config['app_label'], model_config['model_name'])
except (LookupError, KeyError):
return JsonResponse({'error': '模型配置错误。'}, status=400)
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columns = list(fields_map.values())
fields = list(fields_map.keys())
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# 保存文件到服务器
file_name = default_storage.save(excel_file.name, excel_file)
file_path = os.path.join(settings.MEDIA_ROOT, file_name)
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try:
# 打开并解析Excel文件
workbook = load_workbook(file_path, data_only=True)
sheet = workbook.active
data = []
# 读取第一行作为表头
header_row = [cell.value for cell in sheet[1]]
# 检查表头是否与fields_map的values对应
if header_row != columns:
return JsonResponse({'error': '表头不匹配请使用正确的Excel上传模板。'}, status=400)
for row in sheet.iter_rows(min_row=2, values_only=True):
if not all(value is None for value in row):
instance_data = dict(zip(fields, row))
instance = model(**instance_data)
try:
instance.full_clean()
data.append(instance)
except ValidationError as e:
return JsonResponse({'error': f'数据校验错误: {e.message_dict}'}, status=400)
# 清理,删除上传的文件
os.remove(file_path)
serializer = GroupBusinessTargetSerializer(data, many=True)
return JsonResponse(serializer.data, safe=False)
except Exception as e:
# 清理,删除上传的文件
os.remove(file_path)
return JsonResponse({'error': f'解析文件时出错: {str(e)}'}, status=500)
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return JsonResponse({'error': '请求错误'}, status=400)
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@login_required
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def save_excel_table_data(request):
if request.method == 'POST':
try:
data = json.loads(request.body)
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app_label = data.get('app_label')
model_name = data.get('model_name')
table_data = data.get('table_data')
if not app_label or not model_name or not table_data:
return JsonResponse({'error': '缺少必要的参数'}, status=400)
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# 使用Django的apps模块获取模型
Model = apps.get_model(app_label, model_name)
# 处理每一行数据
for row_data in table_data:
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try:
instance = Model(**row_data)
instance.full_clean() # 验证数据
instance.save()
except ValidationError as e:
return JsonResponse({'error': f'数据校验错误: {e.message_dict}'}, status=400)
except Exception as e:
return JsonResponse({'error': f'保存数据时出错: {str(e)}'}, status=500)
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return JsonResponse({'message': '表格数据保存成功'}, status=200)
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except json.JSONDecodeError:
return JsonResponse({'error': '无效的JSON格式'}, status=400)
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except Exception as e:
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return JsonResponse({'error': f'服务器内部错误: {str(e)}'}, status=500)
return JsonResponse({'error': '无效的请求方法'}, status=400)